Thanks! I hope you enjoy it! It should be pretty hackable. If you search for "Primary Ecological Succession" for your biome, you should find resources. If you do create a hack, please share!
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I did a little poking around, but I'm no expert (my son is). The early stages look the same. In stage 3, we start seeing hardy grasses and annuals along with small lizards and birds. Stage 4, small bushes and succulents. Stage 5: larger bushes and small cacti with birds and snakes. Stage 6: Trees, larger cacti and predators like coyotes and hawks.